finish port to libadwaita dialogs

src/widgets/window.rs

@@ -236,8 +236,7 @@ impl NotifyWindow {
         imp.code_btn.connect_clicked(move |_| {
             let this = this.clone();
             this.selected_subscription().map(move |sub| {
-                AdvancedMessageDialog::new(&this, sub, this.imp().entry.text().to_string())
-                    .present()
+                AdvancedMessageDialog::new(sub, this.imp().entry.text().to_string()).present(&this)
             });
         });
     }